@inproceedings{b27a443f546446a98e7016f5e3ce3f7f,
title = "A wireless chemical sensing scheme using ultrasonic imaging of microbubble embeded hydrogel",
abstract = "In this paper, we demonstrate a wireless chemical sensing scheme using ultrasonic imaging of a microbubble-functionalized hydrogel, which we call 'bubblegel.' By incorporating oxygen microbubbles into a hydrogel, its volume transition, which is responsive to its chemical microenvironment, can be wirelessly monitored by ultrasonic imaging; measuring volume directly or measuring the reflected acoustic intensity from the surface of the bubblegel. Here a bubblegel fabricated with pH-sensitive poly (methacrylic acid-co-acrylamide) hydrogel is investigated in vitro. The sensor shows a sensitivity of 19.49 gray-scale intensity/pH and a resolution of 0.25 pH unit in the linear response region (between pH 4 and 6). It is expected that the concept can be adapted to hydrogels sensitive to other stimuli (e.g., glucose, biomarkers, etc.).",
keywords = "Chemical Sensor, Hydrogel, Ultrasonic Imaging",
author = "Park, {J. H.} and A. Kim and Song, {S. H.} and P. Bhandari and J. Irudayaraj and B. Ziaie",
note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015 ; Conference date: 21-06-2015 Through 25-06-2015",
year = "2015",
month = aug,
day = "5",
doi = "10.1109/TRANSDUCERS.2015.7181402",
language = "English (US)",
series = "2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "2220--2223",
booktitle = "2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015",
address = "United States",
}